HackerEarth is the most comprehensive developer assessment software that helps companies to accurately measure the skills of developers during the recruiting process.
Cost / License
- Free
- Proprietary
Platforms
- Online




Project Euler is described as 'Series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve' and is a Code Learning service in the development category. There are more than 25 alternatives to Project Euler, not only websites but also apps for a variety of platforms, including Android, Mac, Windows and SaaS apps. The best Project Euler alternative is Khan Academy, which is free. Other great sites and apps similar to Project Euler are exercism, LeetCode, HackerRank and tutorialspoint.
HackerEarth is the most comprehensive developer assessment software that helps companies to accurately measure the skills of developers during the recruiting process.




CodeSignal is the leading provider of assessments for technical hires. As the creator of the Predictive Coding Score, a measure of a candidates coding skills, CodeSignal provides HR teams with Certified Assessments, Custom Tests, and Live Interviews.




Leetcode Wizard is an invisible desktop application powered by AI, instantly providing answers to all Leetcode problems for effortless coding interviews, like having ChatGPT in your ear.



Practice-focused Java learning platform with over 1200 tasks offering instant feedback. Features quizzes, projects, career insights, suitable for beginners and seasoned developers.




CodeGym.cc is the most popular SaaS alternative to Project Euler.
This resource is created to provide short programming problems for all who wants learn programming and improve their programming skills, but who could not easily find enough tasks for practice.

Kattis helps companies make safer recruitments and attract the best developers with its dynamic challenge platform.



Learn Web Design and Development with SitePoint tutorials, courses, and books - HTML5, CSS3, JavaScript, PHP, mobile app development, Responsive Web Design.
Learn and Practice on almost all coding interview questions asked historically and get referred to the best tech companies.
KillerCoder.io is a testing platform to test developers and improve your technical hiring efficiency. Create an account and invite prospective candidates and test their technical and/or soft skills.


Halite Programming Challenge is the most popular Linux alternative to Project Euler.
Start learning without distractions. Join thousands of focused learners who choose quality over quantity. Always free, always focused.
